Author Archives: hlocke

Busy couple of weeks

For those interested in the DLP projector project I will be posting additional information in a week or so. Between a daughter graduating from college, the robomagellan competition coming up this weekend and work I have had a busy couple … Continue reading

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I’m going to go over this ground once and then I’m going to leave it alone.

This sort of thing pisses me off. Yesterday I read this: 16-year-old-girl-arrested-and-charged-felony-science-project-mistake TWO FELONIES AND EXPULSION FROM SCHOOL. Really When I was in high school for one of my science fair projects I strung 4 12 volt automobile storage batteries … Continue reading

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Aligning Conestoga’s digital compass to the base (Conestoga)

The first robomagellan competition is in a few weeks so I’m working on conestoga quite a bit these days. One of the issues I needed to resolve for conestoga was aligning the robot base and the digital compass on the … Continue reading

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A few quick notes on the casio projector uv mod (3d printer)

some notes for those who may be wanting to do this mod: When disassembling the projector you have two types of flat cables, push in and connectors that have a latch. The latched connector have what looks like a black … Continue reading

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First Light, Casio projector uv mod. (3d printer)

First test with uv led in position. Even without having optimized the light path optics a lot of uv is being projected. This photo was taken in a well lit room, when I took the photo my camera immediately “stopped … Continue reading

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casio dlp projector mods

I think that the casio xj-a140 (purchased cheap without the blue leds and heatsink) may be one of the better dlp projectors for dlp based 3d printers IF you plan to modify it for use with a high output uv … Continue reading

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DLP projector red led assembly and uv led (3d printer)

I received the 20 watt uv led today and thought I would post some images of the red led assembly from the casio dlp projector and the uv led (only the blue led block was missing from the projector). I … Continue reading

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DLP projector for 3d printer

The DLP projector I am using for the 3d printer I’m building is a casio xj-a140 LED based projector. I am using this projector for a number of reasons: When purchased without the blue led array they can be purchased … Continue reading

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dlp 3d printer main assembly photos

Here are a couple of photos of the 3d printer so far. It’s a “bottom up” design with a tilting vat. Here is a photo of a test of the dlp projector.

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Design to CNC, the directors cut.

Design: Draftsight GCODE Genration: Heekscnc CNC controller: LinuxCNC Draftsight drawing (saved as an r2010ascii dxf file) which is loaded into Heekscnc (where machining operations are set up and gcode is generated), the generated gcode is loaded into LinuxCNC for machining … Continue reading

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Building A DLP 3D Printer

This was just too cool a project to pass up. A DLP 3D printer is a simpler build than my cnc router was by a long shot. It also seems simpler, at least to me, than the extrusion type 3d … Continue reading

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What’s up with the stalk (Conestoga)

At the first robomagellan I attended I noticed that many of the entrants had their digital compasses mounted on a stalk. This made a lot of sense to me because you want to as much as possible isolate the compass … Continue reading

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Serial, let’s keep it simple (Conestoga)

I initially controlled conestoga’s sabertooth motor driver through the arduino: arduino to pc: here’s a velocity pc: ok let me do the PID thing. pc to arduino: here’s a throttle setting from the PID, don’t screw it up. arduino to … Continue reading

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PID Tuning (Conestoga)

I’ve been doing some PID tuning on conestoga this week. The only thing I can say is start with P at a low value. My wheel encoders give me both a count (90 pulses per wheel revolution which is about … Continue reading

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New Blog For Projects, Interests, Etc.

The blog I had over at lockeconsulting.com (lockeconsulting.com/lockeblog) did not seem to be a good fit for talking about my personal interests and projects since it is a business site so I am relocating my personal interests blog here.  I … Continue reading

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Original Robomagellan Project Pages From Lockeblog

Click here to see the original project pages from lockeblog. Conestoga Robomagellan Robot

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